An in vitro study at low field for MR guidance of a biopsy needle

Arbogast-Ravier, S.; Gangi, Afshin; Choquet, Philippe; Brunot, B.; Constantinesco, A.

doi:10.1016/0730-725x(94)00103-a

Cited by 14 publications

(10 citation statements)

References 3 publications

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“…The sizes of the voiding and distortion from susceptibility artifact are directly proportional to the static magnetic field strength . The strength of the frequency‑encoding gradient is also inversely proportional to the degree of susceptibility artifact .…”

Section: Discussionsupporting

confidence: 68%

Magnetic Resonance Imaging Metallic Artifact of Commonly Encountered Surgical Implants and Foreign Material

Sutherland‐Smith

Tilley²

2012

Vet Radiology Ultrasound

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Magnetic resonance imaging (MRI) artifacts secondary to metallic implants and foreign bodies are well described. Herein, we provide quantitative data from veterinary implants including total hip arthroplasty implants, cranial cruciate repair implants, surgical screws, a skin staple, ligation clips, an identification microchip, ameroid constrictor, and potential foreign bodies including air gun and BB projectiles and a sewing needle. The objects were scanned in a gelatin phantom with plastic grid using standardized T2-weighted turbo-spin echo (TSE), T1-weighted spin echo, and T2*-weighted gradient recalled echo (GRE) image acquisitions at 1.5 T. Maximum linear dimensions and areas of signal voiding and grid distortion were calculated using a DICOM workstation for each sequence and object. Artifact severity was similar between the T2-weighted TSE and T1-weighted images, while the T2*-weighted images were most susceptible to artifact. Metal type influenced artifact size with the largest artifacts arising from steel objects followed by surgical stainless steel, titanium, and lead. For animals with metallic surgical implants or foreign bodies, the quantification of the artifact size will help guide clinicians on the viability of MRI.

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Section: Discussionsupporting

confidence: 68%

Magnetic Resonance Imaging Metallic Artifact of Commonly Encountered Surgical Implants and Foreign Material

Sutherland‐Smith

Tilley²

2012

Vet Radiology Ultrasound

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“…turbo spin echo sequence) will further reduce needle artefacts [32,33]. The needle artefact increases with the magnetic field strength regardless of the needle angle and the biopsy system used [34,35].…”

Section: Discussionmentioning

confidence: 97%

Magnetic resonance-guided upper abdominal biopsies in a high-field wide-bore 3-T MRI system: feasibility, handling, and needle artefacts

et al. 2010

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“…This procedure can be proposed as an alternative means of obtaining pathological information when an autopsy is refused. Our MRI system uses a low magnetic field in a widely open magnet: this represents a great advantage, since the size of the MRI needle artifact is directly dependent on the main magnetic field value 20 .…”

Section: Discussionmentioning

confidence: 99%

Low‐field dedicated magnetic resonance imaging: a potential tool for assisting perinatal autopsy

Langer

Choquet

Ravier

et al. 1998

Ultrasound in Obstet & Gyne

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Although the practice of perinatal autopsy has increased in recent years, examination of the fetus and especially of the fetal brain during the first trimester or the beginning of the second trimester remains difficult. Postmortem highresolution images of the brain of a normal and an abnormal fetus of the same gestational age (22 weeks) were obtained with a low-field (0.1 T) dedicated magnetic reson-

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An in vitro study at low field for MR guidance of a biopsy needle

Cited by 14 publications

References 3 publications

Magnetic Resonance Imaging Metallic Artifact of Commonly Encountered Surgical Implants and Foreign Material

Magnetic Resonance Imaging Metallic Artifact of Commonly Encountered Surgical Implants and Foreign Material

Magnetic resonance-guided upper abdominal biopsies in a high-field wide-bore 3-T MRI system: feasibility, handling, and needle artefacts

Low‐field dedicated magnetic resonance imaging: a potential tool for assisting perinatal autopsy

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