Feasibility of Using SPECT/CT Imaging to Map Lymphatic Drainage Patterns in Prostate Cancer Patients

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
University of California, San Francisco
ClinicalTrials.gov Identifier:
NCT01008969
First received: November 5, 2009
Last updated: December 29, 2011
Last verified: December 2011
  Purpose

The purpose of this study is to develop a practice procedure for lymphatic drainage mapping with the intent of providing a new tool that could potentially be used for radiation treatment planning. High-risk prostate cancer patients who are scheduled to be treated with intensity-modulated radiotherapy (IMRT) may be eligible to enroll in this study. 99mTc-sulfur nanocolloid, a radiopharmaceutical ("tracer") will be injected by a urologist using transrectal ultrasound guidance (TRUS)at the UCSF Urology Clinic. Participants will then undergo SPECT/CT imaging at the UCSF Nuclear Medicine Clinic. This study will evaluate the feasibility of transporting patients to the Nuclear Medicine Clinic for imaging within 1-3 hours after administration of 99mTc-sulfur nanocolloid.


Condition Intervention
Prostate Cancer
Other: SPECT-CT imaging

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: Practice Procedure for 99mTc-Sulfur Nanocolloid Lymphatic Drainage Mapping in Prostate Cancer Using SPECT-CT (Single Photon Emission Computed Tomography / Computed Tomography)

Resource links provided by NLM:


Further study details as provided by University of California, San Francisco:

Primary Outcome Measures:
  • Percentage of Participants Successfully Completed 99mTc-sulfur Nanocolloid SPECT/CT Within 3 Hours After Injection [ Time Frame: 1 day ] [ Designated as safety issue: No ]
    Successful completion of 99mTc-sulfur nanocolloid SPECT/CT means that the images were obtained within 3 hours, and the images showed patients' lymphatic drainage.


Secondary Outcome Measures:
  • Percentage of Images With Detectable Sentinel Lymph Nodes (LNs) From 99mTc-sulfur Nanocolloid SPECT/CT Scans [ Time Frame: 1 day ] [ Designated as safety issue: No ]
    There was only one arm for this study. All participants who had prostate cancer received 99mTc-sulfur nanocolloid injection and imaged by SPECT/CT within 3 hours of injection. The imaging studies qualitatively detected radiotracer distribution within the prostate and local lymphatic system. The detection of the radiotracer distribution was performed by experienced attending nuclear medicine physicians at UCSF. The qualitative detection includes visual lymph node uptake seen by SPECT scans overlaid on coregistered CT scans.


Enrollment: 10
Study Start Date: November 2009
Study Completion Date: December 2010
Primary Completion Date: December 2010 (Final data collection date for primary outcome measure)
Intervention Details:
    Other: SPECT-CT imaging
    SPECT/CT for 3-dimensional mapping of 99mTc-sulfur nanocolloid in order to identify personalized lymphatic drainage patterns
Detailed Description:

The entire study procedure involves 1) preparation of 99mTc-sulfur nanocolloid, 2) administration of 99mTc-sulfur nanocolloid with transrectal ultrasound guidance, 3) transfer of the patient to the Nuclear Medicine clinic for SPECT/CT (Infinia Hawkeye, GE Healthcare) imaging, and 4) tomographically capturing distributions of 99mTc-sulfur nanocolloid uptake in the patient's lymphatic drainage sites within a practical image acquisition time (1-3 h postinjection) considering the patient transit time between injection and imaging.

Administration of 99mTc-sulfur nanocolloid will be performed at the UCSF Urology clinic. The injection will be performed following the clinically accepted method that has been described by European investigators. 99mTc-sulfur nanocolloid imaging utilizes trace amounts of radioactivity. 100-200 MBq (2.7-5.4 mCi) of 99mTc-sulfur nanocolloid will be administered into two lobes of the prostate gland under transrectal ultrasound guidance with three fractions each into peripheral and central zone of the prostatic apex, mid portion, and base. 1% Lidocaine may be administered for local anesthesia per routine clinical protocol as deemed appropriate by the performing urologist.

The procedure will be considered feasible if the practice procedure (from injection to completion of imaging) is successfully implemented within 3 hours of injection (including patient transport time). Imaging will be considered successful if radiotracer is qualitatively detected within the prostate and local lymphatic system.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Male
  • Age ≥ 18 years
  • Diagnosis of definitive high-risk prostate cancer
  • Clinically eligible and scheduled for definitive IMRT treatment with pelvic lymph nodal radiation (not a study procedure)
  • At least one of the following risk factors:

    1. Pathologically confirmed pelvic nodal involvement;
    2. Enlarged pelvic lymph nodes (greater than 1 cm in the short axis) visible on CT or MRI images, or
    3. Greater than 15% risk of lymph node involvement calculated using the equation: Risk of positive nodes (%) = (2/3) prostate specific antigen (PSA) + [(Gleason score - 6)] × 10]. This formula is used to estimate the pathologic stage of prostate cancer with preoperative prostate specific antigen (PSA) and Gleason score, and adopted by many radiation oncology clinics, including our own radiation oncology physicians.
  • Ability to give written informed consent and willingness to comply with the requirements of the protocol

Exclusion Criteria:

• Any condition that compromises compliance with the objectives and procedures of this protocol, as judged by the principal investigator

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01008969

Locations
United States, California
UCSF Helen Diller Family Comprehensive Cancer Center
San Francisco, California, United States, 94115
Sponsors and Collaborators
University of California, San Francisco
Investigators
Principal Investigator: Youngho Seo, PhD University of California, San Francisco
  More Information

No publications provided

Responsible Party: University of California, San Francisco
ClinicalTrials.gov Identifier: NCT01008969     History of Changes
Other Study ID Numbers: CC085513, H46038-33934
Study First Received: November 5, 2009
Results First Received: July 19, 2011
Last Updated: December 29, 2011
Health Authority: United States: Food and Drug Administration

Keywords provided by University of California, San Francisco:
Prostate
SPECT/CT

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Neoplasms
Genital Diseases, Male
Prostatic Diseases

ClinicalTrials.gov processed this record on August 01, 2014