Roshan M Patel

Title(s)Assistant Clinical Professor, Urology
Address1001 Health Sciences Road
Irvine CA 92697-3950
Phone(714) 456-6849
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    1. Global Assessments of the Endockscope System: Long-Term Impact of Cyber Endoscopy. J Endourol. 2021 Sep 27. Afyouni AS, O'Leary M, Okhunov Z, Ayad M, Yoon R, Brevik A, Peta A, Patel RM, Dolan B, Landman J, Clayman RV. PMID: 33926236.
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    2. Office-Based Renal Tumor Biopsy: a Paradigm Change in the Management of a Small Renal Mass? Curr Urol Rep. 2021 Aug 06; 22(9):43. Patel RM, Okhunov Z, Jiang P, Tapiero S, Landman J. PMID: 34357476.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    3. Can preoperative renal mass biopsy change clinical practice and reduce surgical intervention for small renal masses? Urol Oncol. 2021 Oct; 39(10):735.e17-735.e23. Okhunov Z, Gorin MA, Jefferson FA, Afyouni AS, Allaf ME, Pierorazio PM, Patel RM, Huynh LM, Tapiero S, Osann K, Kavoussi LR, Clayman RV, Landman J. PMID: 34364751.
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    4. Crowd-Sourced Assessment of Surgical Skills of Urology Resident Applicants: Four-Year Experience. J Surg Educ. 2021 Jun 16. Karani R, Tapiero S, Jefferson FA, Vernez S, Xie L, Larson KN, Osann K, Okhunov Z, Patel RM, Landman J, Clayman RV, Stephany HA. PMID: 34147416.
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    5. Reply by Authors. J Urol. 2021 08; 206(2):372. Tapiero S, Kaler KS, Jiang P, Lu S, Cottone C, Patel RM, Okhunov Z, Klopfer MJ, Landman J, Clayman RV. PMID: 33960809.
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    6. Caveat Emptor: The Heat Is "ON": An In Vivo Evaluation of the Thulium Fiber Laser and Temperature Changes in the Porcine Kidney during Dusting and Fragmentation Modes. J Endourol. 2021 Apr 28. Okhunov Z, Jiang P, Afyouni AS, Ayad M, Arada RB, Brevik A, Akopian G, Patel RM, Landman J, Clayman RV. PMID: 33906433.
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    7. Determining the Safety Threshold for the Passage of a Ureteral Access Sheath in Clinical Practice Using a Purpose-Built Force Sensor. J Urol. 2021 Aug; 206(2):364-372. Tapiero S, Kaler KS, Jiang P, Lu S, Cottone C, Patel RM, Okhunov Z, Klopfer MJ, Landman J, Clayman RV. PMID: 33780267.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    8. Comparison of Conventional and Triple Bolus Computerized Tomographic Urography Protocols for Radiation Dose Reduction in Hematuria Evaluation: A Randomized Controlled Trial. J Urol. 2021 06; 205(6):1740-1747. Karani R, Sung JM, Xie L, Arada RB, Jefferson FA, Parkhomenko E, Lama DJ, Lee S, Houshyar R, Lall C, Okhunov Z, Jiang P, Tapiero S, Patel RM, Clayman RV, Landman J. PMID: 33605796.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Analysis of Ureteral Diameter and Peristalsis in Response to Irrigant Fluid Temperature Changes in an In Vivo Porcine Model. J Endourol. 2021 Aug; 35(8):1236-1243. Patel RM, Jiang P, Karani R, Phillips T, Arada RB, Xie L, Said H, Tapiero S, Landman J, Farzaneh T, Venkatesh R, Clayman RV. PMID: 33380276.
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    10. Interactive Virtual Reality Renal Models as an Educational and Preoperative Planning Tool for Laparoscopic Donor Nephrectomy. Urology. 2021 Jul; 153:192-198. Xie L, O'Leary M, Jefferson FA, Karani R, Limfueco L, Parkhomenko E, Sung JM, Patel RM, Ichii H, Dafoe D, Clayman RV, Landman J. PMID: 33556447.
      View in: PubMed   Mentions: 1     Fields:    
    11. Evaluation of a Novel Female Gender Flexible Ureteroscope: Comparison of Flow and Deflection to a Standard Flexible Ureteroscope. J Endourol. 2021 06; 35(6):840-846. Karani R, Arada RB, Ayad M, Xie L, Brevik A, Peta A, Jiang P, Patel RM, Landman J, Clayman RV. PMID: 33439772.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. The impact of the number of lifetime stone events on quality of life: results from the North American Stone Quality of Life Consortium. Urolithiasis. 2021 Aug; 49(4):321-326. Tapiero S, Limfuco L, Bechis SK, Sur RL, Penniston KL, Nakada SY, Antonelli JA, Streeper NM, Sivalingam S, Viprakasit DP, Averch TD, Okhunov Z, Patel RM, Chi T, Pais VM, Chew BH, Bird VG, Andonian S, Bhojani N, Canvasser NE, Landman J. PMID: 33409555.
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    13. Renal Collecting System Injury During Percutaneous Nephrolithotomy, More Likely When Using Continuous Flow Sheaths? J Endourol Case Rep. 2020; 6(4):523-525. Peta A, Brevik A, Ghamarian P, Patel RM. PMID: 33457719.
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    14. Qualitative Review of Clinical Guidelines for Medical and Surgical Management of Urolithiasis: Consensus and Controversy 2020. J Urol. 2021 Apr; 205(4):999-1008. Jiang P, Xie L, Arada R, Patel RM, Landman J, Clayman RV. PMID: 33284671.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    15. Editorial Comment on: "Do Lifestyle Factors Including Smoking, Alcohol, and Exercise Impact Your Risk of Developing Kidney Stone Disease? Outcomes of a Systematic Review" by Jones et al. J Endourol. 2021 05; 35(5):736. Patel RM. PMID: 32935612.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. In Vitro Evaluation of Stone Fragment Evacuation by Suction. J Endourol. 2021 02; 35(2):187-191. Schneider D, Abedi G, Larson K, Ayad M, Yoon R, Patel RM, Landman J, Clayman RV. PMID: 32791862.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    17. Editorial Comment on: "Pressurized-Bag Irrigation Versus Hand-Operated Irrigation Pumps During Ureteroscopic Laser Lithotripsy: Comparison of Infectious Complications" by Farag et al. J Endourol. 2021 07; 35(7):1118. Tapiero S, Patel RM. PMID: 32551872.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. Surface-Treated Pellethanes: Comparative Quantification of Encrustation in Artificial Urine Solution. J Endourol. 2020 08; 34(8):868-873. Cottone CM, Lu S, Wu YX, Guan K, Yoon R, Limfueco L, Hoang T, Ciridon W, Ratner BD, Johnson KR, Patel RM, Landman J, Clayman RV. PMID: 32316757.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    19. Characterization of intracalyceal pressure during ureteroscopy. World J Urol. 2021 Mar; 39(3):883-889. Patel RM, Jefferson FA, Owyong M, Hofmann M, Ayad ML, Osann K, Okhunov Z, Landman J, Clayman RV. PMID: 32462302.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    20. Ureteroscopic Doppler Ultrasonography: Mapping Renal Blood Flow from Within the Collecting System. J Endourol. 2020 06; 34(6):687-691. Patel RM, Limfueco L, Tapiero S, O'Leary M, Cooper V, Parkhomenko E, Kaler KS, Okhunov Z, Regan D, Landman J, Clayman RV. PMID: 32212863.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    21. Evaluation of a Diuresis Enhanced Non-Contrast Computed Tomography for Kidney Stones Protocol to Maximize Collecting System Distention. J Endourol. 2020 03; 34(3):255-261. Sung JM, Jefferson FA, Tapiero S, Patel RM, Owyong M, Xie L, Karani R, Ghamarian P, Lall C, Clayman RV, Landman J. PMID: 31984761.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    22. Prospective Randomized Comparison of Standard Hand Pump Infuser Irrigation vs an Automated Irrigation Pump During Percutaneous Nephrolithotomy and Ureteroscopy: Assessment of Operating Room Efficiency and Surgeon Satisfaction. J Endourol. 2020 02; 34(2):156-162. Jefferson FA, Sung JM, Limfueco L, Lu S, Cottone CM, Tapiero S, Patel RM, Clayman RV, Landman J. PMID: 31608653.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    23. Smartphone technology and its applications in urology: a review of the literature. World J Urol. 2020 Oct; 38(10):2393-2410. Tapiero S, Yoon R, Jefferson F, Sung J, Limfueco L, Cottone C, Lu S, Patel RM, Landman J, Clayman RV. PMID: 31598754.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    24. Initial Evaluation of a Novel Modulated Radiofrequency-based Bladder Denervation Device. Urology. 2019 Dec; 134:237-242. Okhunov Z, Mao R, Jefferson FA, Yoon R, Patel RM, Lee TK, Huang J, Zhang Y, Ghoniem GG, Li GP, Landman J. PMID: 31539508.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    25. Endockscope: A Disruptive Endoscopic Technology. J Endourol. 2019 11; 33(11):960-965. Lu S, Cottone CM, Yoon R, Jefferson FA, Sung JM, Okhunov Z, Tapiero S, Patel RM, Landman J, Clayman RV. PMID: 31195831.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    26. Laser Endoscopic X-Ray-Guided Intrarenal Tract: Comparison Among Renal Access Modalities in the Porcine Kidney. J Endourol. 2019 09; 33(9):719-724. Kaler KS, Cooper V, O'Leary M, Valley ZA, Lee TK, Patel RM, Landman J, Clayman RV. PMID: 31184211.
      View in: PubMed   Mentions:    Fields:    Translation:Animals
    27. Ureteral Access Sheath Deployment: How Much Force Is Too Much? Initial Studies with a Novel Ureteral Access Sheath Force Sensor in the Porcine Ureter. J Endourol. 2019 09; 33(9):712-718. Kaler KS, Lama DJ, Safiullah S, Cooper V, Valley ZA, O'Leary ML, Patel RM, Klopfer MJ, Li GP, Landman J, Clayman RV. PMID: 31161788.
      View in: PubMed   Mentions: 1     Fields:    Translation:Animals
    28. Editorial Comment on: Let's Get to the Point: Comparing Insertion Characteristics and Scope Damage of Flat-Tip and Ball-Tip Holmium Laser Fibers by Carlos et al. (From: Carlos EC, Li J, Young BJ, et al. J Endourol 2019;33:22-26; DOI: 10.1089/end.2018.0229). J Endourol. 2019 01; 33(1):27. Patel RM. PMID: 30311775.
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    29. Pilot Assessment of Immersive Virtual Reality Renal Models as an Educational and Preoperative Planning Tool for Percutaneous Nephrolithotomy. J Endourol. 2019 04; 33(4):283-288. Parkhomenko E, O'Leary M, Safiullah S, Walia S, Owyong M, Lin C, James R, Okhunov Z, Patel RM, Kaler KS, Landman J, Clayman R. PMID: 30460860.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    30. A New Twist on an Old Technique: Lawson Retrograde Endoscopic-Guided Nephrostomy Access for Percutaneous Nephrolithotomy in Prone Split-Leg Position. J Endourol Case Rep. 2018; 4(1):190-194. Kaler KS, Parkhomenko E, Lin CY, Valley ZA, Kim WK, Okhunov Z, Patel RM, Landman J. PMID: 30515460.
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    31. Multi-institutional Evaluation of Producing and Testing a Novel 3D-Printed Laparoscopic Trainer. Urology. 2019 02; 124:297-301. Parkhomenko E, Yoon R, Okhunov Z, Patel RM, Dolan B, Kaler K, Schwartz MJ, Shah PH, Bierwiler H, Gamboa AJ, Miano R, Germani S, Fabbro DD, Zordani A, Micali S, Kavoussi LR, Clayman RV, Landman J. PMID: 30419263.
      View in: PubMed   Mentions: 5     Fields:    
    32. Coconut Water: An Unexpected Source of Urinary Citrate. Biomed Res Int. 2018; 2018:3061742. Patel RM, Jiang P, Asplin J, Granja I, Capretz T, Osann K, Okhunov Z, Landman J, Clayman RV. PMID: 30515390.
      View in: PubMed   Mentions: 2     Fields:    Translation:HumansAnimals
    33. Effect of positioning on ureteric stone retropulsion: 'gravity works'. BJU Int. 2019 01; 123(1):113-117. Patel RM, Walia AS, Grohs E, Okhunov Z, Landman J, Clayman RV. PMID: 30098120.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. Pretreatment Diagnosis of the Small Renal Mass: Status of Renal Biopsy in the United States of America. J Endourol. 2018 09 12; 32(9):884-890. Patel RM, Safiullah S, Okhunov Z, Meller D, Osann K, Kaler K, Landman J, Clayman RV. PMID: 29978713.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    35. The Endockscope Using Next Generation Smartphones: "A Global Opportunity". J Endourol. 2018 08; 32(8):765-770. Tse C, Patel RM, Yoon R, Okhunov Z, Landman J, Clayman RV. PMID: 29860870.
      View in: PubMed   Mentions: 2     Fields:    Translation:Animals
    36. Renal mass biopsy: an oncological conundrum. Curr Opin Urol. 2018 07; 28(4):360-363. Patel RM, Parkhomenko E, Kaler KS, Okhunov Z, Clayman RV, Landman J. PMID: 29851416.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    37. Percutaneous renal biopsy: approach, diagnostic accuracy and risks. Curr Opin Urol. 2018 07; 28(4):369-374. Capretz T, Patel RM, Okhunov Z. PMID: 29697474.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    38. Medical impulsive therapy (MIT): the impact of 1 week of preoperative tamsulosin on deployment of 16-French ureteral access sheaths without preoperative ureteral stent placement. World J Urol. 2018 Dec; 36(12):2065-2071. Kaler KS, Safiullah S, Lama DJ, Parkhomenko E, Okhunov Z, Ko YH, Huynh L, Patel RM, Landman J, Clayman RV. PMID: 29802428.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    39. Global Survey of a Novel Smartphone Mobile Endoscopy System. J Endourol. 2018 05; 32(5):451-454. Yoon R, Capretz T, Patel RM, Okhunov Z, Landman J, Clayman RV. PMID: 29634357.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    40. Multi-institutional Evaluation of Upper Urinary Tract Biopsy Using Backloaded Cup Biopsy Forceps, a Nitinol Basket, and Standard Cup Biopsy Forceps. Urology. 2018 Jul; 117:89-94. Lama DJ, Safiullah S, Patel RM, Lee TK, Balani JP, Zhang L, Okhunov Z, Margulis V, Savage SJ, Uchio E, Landman J. PMID: 29630955.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    41. Quarter Century Management of Chronic Ureteropelvic Junction Obstruction in a Solitary Kidney with a Ureteral Stent. J Endourol Case Rep. 2018; 4(1):42-44. Abedi G, Patel RM, Lin C, Clayman RV. PMID: 29662959.
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    42. "STONE TREES": Metabolic Evaluation and Medical Treatment of the Urolithiasis Patient Made Easy. J Endourol. 2018 05; 32(5):387-392. Clayman RV, Patel RM, Pearle M. PMID: 29444590.
      View in: PubMed   Mentions:    Fields:    Translation:HumansPHPublic Health
    43. Fluid Dynamic Analysis of Hand-Pump Infuser and UROMAT Endoscopic Automatic System for Irrigation Through a Flexible Ureteroscope. J Endourol. 2018 05; 32(5):431-436. Lama DJ, Owyong M, Parkhomenko E, Patel RM, Landman J, Clayman RV. PMID: 29334778.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    44. Ureteroscopic holmium laser-assisted retrograde nephrostomy access: a novel approach to percutaneous stone removal. World J Urol. 2018 Jun; 36(6):963-969. Kaler KS, Parkhomenko E, Okunohov Z, Patel RM, Landman J, Clayman RV, Uribe CA. PMID: 29423876.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    45. Science Mandates Precision: A Plea for Accuracy in Reporting. J Urol. 2018 05; 199(5):1123-1124. Owyong M, Patel RM, Landman J, Clayman RV. PMID: 29066361.
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    46. Predictability and Practicality of Image-Based Scoring Systems for Patient Assessment and Outcome Stratification During Percutaneous Nephrolithotomy: a Contemporary Update. Curr Urol Rep. 2017 Oct 18; 18(12):95. Huynh LM, Huang E, Patel RM, Okhunov Z. PMID: 29046986.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    47. Assessing the Effect of an Intensive 2-Week Surgical Training and Innovation Program for High-School Students. J Surg Educ. 2017 Nov - Dec; 74(6):958-967. Labadie B, Patel RM, Gandy Labadie J, Hwang C, Okhunov Z, Landman J. PMID: 28625495.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    48. Clinical Comparison of Conventional and Mobile Endockscope Videocystoscopy Using an Air or Fluid Medium. J Endourol. 2017 06; 31(6):593-597. Dutta R, Yoon R, Patel RM, Spradling K, Okhunov Z, Sohn W, Lee HJ, Landman J, Clayman RV. PMID: 28393623.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    49. Prone Versus Supine Percutaneous Nephrolithotomy: What Is Your Position? Curr Urol Rep. 2017 Apr; 18(4):26. Patel RM, Okhunov Z, Clayman RV, Landman J. PMID: 28247328.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    50. Multipoint Thermal Sensors Associated with Improved Oncologic Outcomes Following Cryoablation. J Endourol. 2017 04; 31(4):355-360. Martin JW, Patel RM, Okhunov Z, Vyas A, Vajgrt D, Clayman RV. PMID: 28114787.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    51. Aftermath of Grade 3 Ureteral Injury from Passage of a Ureteral Access Sheath: Disaster or Deliverance? J Endourol Case Rep. 2016; 2(1):169-171. Patel RM, Okhunov Z, Kaler K, Clayman RV. PMID: 27868091.
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