1
|
Lux CN, Culp WTN, Johnson LR, Kent M, Mayhew P, Daniaux LA, Carr A, Puchalski S. PROSPECTIVE COMPARISON OF TUMOR STAGING USING COMPUTED TOMOGRAPHY VERSUS MAGNETIC RESONANCE IMAGING FINDINGS IN DOGS WITH NASAL NEOPLASIA: A PILOT STUDY. Vet Radiol Ultrasound 2017; 58:315-325. [PMID: 28233364 DOI: 10.1111/vru.12486] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 12/23/2016] [Indexed: 11/29/2022] Open
Abstract
Identification of nasal neoplasia extension and tumor staging in dogs is most commonly performed using computed tomography (CT), however magnetic resonance imaging (MRI) is routinely used in human medicine. A prospective pilot study enrolling six dogs with nasal neoplasia was performed with CT and MRI studies acquired under the same anesthetic episode. Interobserver comparison and comparison between the two imaging modalities with regard to bidimensional measurements of the nasal tumors, tumor staging using historical schemes, and assignment of an ordinal scale of tumor margin clarity at the tumor-soft tissue interface were performed. The hypotheses included that MRI would have greater tumor measurements, result in higher tumor staging, and more clearly define the tumor soft tissue interface when compared to CT. Evaluation of bone involvement of the nasal cavity and head showed a high level of agreement between CT and MRI. Estimation of tumor volume using bidimensional measurements was higher on MRI imaging in 5/6 dogs, and resulted in a median tumor volume which was 18.4% higher than CT imaging. Disagreement between CT and MRI was noted with meningeal enhancement, in which two dogs were positive for meningeal enhancement on MRI and negative on CT. One of six dogs had a higher tumor stage on MRI compared to CT, while the remaining five agreed. Magnetic resonance imaging resulted in larger bidimensional measurements and tumor volume estimates, along with a higher likelihood of identifying meningeal enhancement when compared to CT imaging. Magnetic resonance imaging may provide integral information for tumor staging, prognosis, and treatment planning.
Collapse
Affiliation(s)
- Cassie N Lux
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616.,Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, 2407 River Dr, Knoxville, TN, 37996
| | - William T N Culp
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616
| | - Lynelle R Johnson
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616
| | - Michael Kent
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616
| | - Philipp Mayhew
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616
| | - Lise A Daniaux
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616.,Antech Imaging Services, Flumet, France, 73590
| | - Alaina Carr
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616.,Seattle Veterinary Specialists, Kirkland, WA, 98034
| | - Sarah Puchalski
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis, Davis, CA, 95616.,Circle Oak Equine Sports Medicine and Rehabilitation, Petaluma, CA, 94954
| |
Collapse
|
3
|
NITZL DAGMAR, OHLERTH STEFANIE, MUELLER-SCHWANDT FABIENNE, ANGST ANDREA, ROOS MALGORZATA, KASER-HOTZ BARBARA. DYNAMIC COMPUTED TOMOGRAPHY TO MEASURE TISSUE PERFUSION IN SPONTANEOUS CANINE TUMORS. Vet Radiol Ultrasound 2009; 50:347-52. [DOI: 10.1111/j.1740-8261.2009.01548.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
4
|
Drees R, Forrest LJ, Chappell R. Comparison of computed tomography and magnetic resonance imaging for the evaluation of canine intranasal neoplasia. J Small Anim Pract 2009; 50:334-40. [PMID: 19508490 DOI: 10.1111/j.1748-5827.2009.00729.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Canine intranasal neoplasia is commonly evaluated using computed tomography to indicate the diagnosis, to determine disease extent, to guide histological sampling location and to plan treatment. With the expanding use of magnetic resonance imaging in veterinary medicine, this modality has been recently applied for the same purpose. The aim of this study was to compare the features of canine intranasal neoplasia using computed tomography and magnetic resonance imaging. METHODS Twenty-one dogs with confirmed intranasal neoplasia underwent both computed tomography and magnetic resonance imaging. The images were reviewed retrospectively for the bony and soft tissue features of intranasal neoplasia. RESULTS Overall computed tomography and magnetic resonance imaging performed very similarly. However, lysis of bones bordering the nasal cavity and mucosal thickening was found on computed tomography images more often than on magnetic resonance images. Small amounts of fluid in the nasal cavity were more often seen on magnetic resonance images. However, fluid in the frontal sinuses was seen equally well with both modalities. CLINICAL SIGNIFICANCE We conclude that computed tomography is satisfactory for evaluation of canine intranasal neoplasia, and no clinically relevant benefit is gained using magnetic resonance imaging for intranasal neoplasia without extent into the cranial cavity.
Collapse
Affiliation(s)
- R Drees
- Department of Surgical Sciences, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53705-1102, USA
| | | | | |
Collapse
|
5
|
LeBlanc AK, Daniel GB. Advanced imaging for veterinary cancer patients. Vet Clin North Am Small Anim Pract 2007; 37:1059-77; v-i. [PMID: 17950882 DOI: 10.1016/j.cvsm.2007.06.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This article presents an update on the recent advances made in veterinary advanced imaging specifically with regard to cross-sectional modalities (CT and MRI) and nuclear medicine (positron emission tomography [PET] and PET/CT). A brief summary of technical improvements and a review of recent literature are included to provide an overview of the progress made in this important element of the practicing veterinary oncologist's repertoire. An in-depth summary of PET is also included to introduce the technical aspects and potential clinical and research applications of this novel imaging modality in veterinary medicine.
Collapse
Affiliation(s)
- Amy K LeBlanc
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, C247 Veterinary Teaching Hospital, Knoxville, TN 37996-4544, USA.
| | | |
Collapse
|
6
|
Ohlerth S, Scharf G. Computed tomography in small animals – Basic principles and state of the art applications. Vet J 2007; 173:254-71. [PMID: 16516508 DOI: 10.1016/j.tvjl.2005.12.014] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2005] [Indexed: 10/24/2022]
Abstract
Since its clinical introduction, computed tomography (CT) has revolutionized veterinary medicine and is considered to be one of the most valuable tools for the imaging work-up of neurological, oncological and orthopaedic canine and feline patients. In small animals with acute trauma, particularly those involving complex anatomic areas such as the head, spine or pelvis, CT has been established as a standard imaging method. With the increasing availability of radiation therapy in veterinary medicine, CT has also become the principal tool to stage a tumour, assess response, and guide radiation therapy. The increasing availability of helical CT in veterinary medicine has allowed novel techniques such as spiral CT angiography and high-resolution CT. This review provides a brief overview of the historical and technical development of CT and literature reviews of the major clinical CT applications in small animals such as intracranial and extracranial lesions, the spine, the appendicular skeleton, and abdominal and thoracic diseases.
Collapse
Affiliation(s)
- Stefanie Ohlerth
- Section of Diagnostic Imaging and Radio-Oncology, Vetsuisse Faculty, University of Zürich, Winterthurerstrasse 260, 8057 Zürich, Switzerland.
| | | |
Collapse
|