Improving Clinical PET/CT Image Quality in Retrospectively Reconstructed Breath-Hold Images

Lung Cancer Clinical Trial

Official title:

Improving Clinical PET/CT Image Quality in Retrospectively Reconstructed Breath-Hold Images

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT01109953
• Other study ID #: 10-054
• Status: Terminated
• Phase: N/A
• First received: April 20, 2010
• Last updated: March 15, 2012
• Start date: April 2010
• Est. completion date: March 2012

Study information

• Verified date: March 2012
• Source: Memorial Sloan Kettering Cancer Center
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Institutional Review Board
• Study type: Observational

Clinical Trial Summary

The patient has been referred for an FDG PET/CT scan. FDG is a form of sugar that contains a small amount of radioactivity; it is used to see the size and possible spread of cancer in the body.

Pictures of the body are taken on a machine called a PET/CT scanner. The purpose of this current study is to see if we, the investigators, can take clearer pictures of the tumor than we could with our routine scan method. This would allow us to better see how FDG is picked up by the tumor. PET/CT is presently one of the best tools for detecting cancer and determining its spread in the body. However, due to breathing motion, PET and CT images may become blurred and the location of the tumor on CT and PET images may not match. We have developed a new method that enables us to reduce image blurring and to measure the tumor more accurately on PET images. In this study we want to compare two kinds of images: those from the standard PET/CT scan, and the PET/CT scan pictures taken with our new method.

If successful, we may use this new method for clinical routine in the future.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 6
• Est. completion date: March 2012
• Est. primary completion date: March 2012
• Accepts healthy volunteers: No
• Gender: Both
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Participant is capable of providing written consent.

• 18 years of age or older.

• Patient with a known or suspected FDG-avid malignancy in the torso

Exclusion Criteria:

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Lung Cancer

Intervention

Other:
• Breath-Hold PET/CT image set
In addition to the standard clinical PET/CT images, we will provide a breath-hold PET/CT image set, using the same PET data for both. In order to spatially match PET, and therefore improve attenuation correction in the PET images, we will acquire a Breath-Hold CT at 310 mA over the same region covered by PET. The normal-organ doses accumulated from the additional 30 mA CT. The patient's breathing signal during CT and the whole body PET will be recorded using a video camera and in house developed software. We will compare the clinical PET/CT and Breath-Hold PET/CT in regards to lesion detection, lesion volume, and SUV quantification.

Locations

Country	Name	City	State
United States	Memorial Sloan-Kettering Cancer Center	New York	New York

Sponsors (1)

Lead Sponsor	Collaborator
Memorial Sloan Kettering Cancer Center

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	To determine if our breath-hold acquisition technique can be implemented in whole-body PET/CT scans.	Because PET events not satisfying the breathing amplitude selection criteria will be dropped off the final image set, it will be necessary to increase the acquisition time for the FOV's covering the thorax area from 3 min/bed to 5 min/bed to compensate for the reduction in statistics. This should result in a total increase of ~6 min for the whole body scan.	at the time of scan	No
Secondary	To determine if whole body PET/CT improves spatial matching of PET and CT	to compare image quality, blurring, PET-to-CT mis-match, and lesion SUV of the standard PET images with the breath-hold ones.	at the time of scan	No

External Links

•   Memorial Sloan-Kettering Cancer Center