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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Total Enrollment

6 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-04-30

Study Completion Date

2012-03-31

Brief Summary

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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.

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Detailed Description

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Conditions

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Lung Cancer

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Breath-Hold PET/CT image

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.

Breath-Hold PET/CT image set

Intervention Type OTHER

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.

Interventions

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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.

Intervention Type OTHER

Eligibility Criteria

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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