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AUTO- POSITIONING HEAD AND BODY COIL FOR MAGNETIC RESONANCE IMAGING (MRI) SCAN

IP.com Disclosure Number: IPCOM000191445D
Publication Date: 2010-Jan-05
Document File: 6 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention proposes a set of auto-positioning head and body coils for MRI scans. The auto-positioning head and body coils are positioned automatically on the patient without an operator manually placing the coils. The body coil dimension is auto adjusted according to the patient’s size such that the coil is close to the surface being scanned. A closer placement of the coils provides better image quality.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 44% of the total text.

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AUTO- POSITIONING HEAD AND BODY COIL FOR MAGNETIC RESONANCE IMAGING (MRI) SCAN

FIELD OF INVENTION

The invention generally relates to Magnetic Resonance Imaging (MRI) techniques and more particularly to an auto-positioning coil system in the MRI scanner.

BACKGROUND OF THE INVENTION

Magnetic Resonance Imaging (MRI) is a medical imaging technique used to visualize detailed internal structure and limited function of the body. In MRI scans, head and body examination takes up more than 60 percent scan time. Separate coils are employed for scanning different parts of the body. For example, a head coil is used for an MRI of the head and neck area and a body coil is used for a scan of the spine.

Typically, split head coil, used to scan a patient, has two parts. The operator locks the lower half part of the coil on the cradle. The subject to be scanned is placed appropriately. Subsequently, the upper half of the coil is put in place and the coil is land marked. The "Press advance to scan" button is pressed to convey the patient to the isocenter. Generally, the above described process of placing the coils appropriately takes approximately five minutes before the value scan time begins.

Further, to meet varied clinical requirements, where different parts of the body need to be scanned, and multiple coils and scan settings need to be used. The operator changes the coil and scan settings for scanning different parts of the body. For example, the coil settings need to be changed if both the spine and pelvic area need to be scanned for a patient. Changing the coils to scan different parts of the body with different coils adds cost and time to the whole system and makes the workflow more complicated.

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Furthermore, the conventional body coil is not placed close enough to the patient's body to be effective. Inadequate closeness, to the subject being scanned, gives poor performance, poor image quality and signal to noise ratio (SNR) issues.

Therefore there exists a need for a technique that simplifies the scanning procedure by reducing the steps of coil settings and allows the body coils to be placed adequately close to the patient's body.

BRIEF DESCRIPTION OF THE INVENTION

The invention proposes a set of auto-positioning head and body coils for an MRI scan. The auto-positioning coils simplify the coil settings required for scanning multiple parts of the body. Further, the auto-positioning body coil gets auto adjusted according to the patient's size to allow adequate closeness to the patient's body.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides an auto-positioning head and body coils system employed in an MRI scanner.

As shown in Figure 1, the auto-positioning head coil is set on the rear side of the magnetic bore of the MRI scanner. The patient lies on a cradle of the MRI scanner and places his/her head on a head supporter. The auto-positioning head coil moves automatically to the is...