Journal Club - 2006-05-16

MRI versus CT: soft tissue diagnoses

Principles of MRI:

1. Edelman RR, Warach S. Magnetic resonance imaging (1). N Engl J Med. 1993 Mar 11;328(10):708-16. PMID: 8433731

• Table 1. Summary of Signal Intensities on MRI

2. Edelman RR, Warach S. Magnetic resonance imaging (2) N Engl J Med. 1993 Mar 18;328(11):785-91. PMID: 8369029

3. Hendee WR, Morgan CJ. Magnetic resonance imaging. Part II--Clinical applications. West J Med. 1984 Nov;141(5):638-48. PMID: 6516335 PubMed Central

4. Hendee WR, Morgan CJ. Magnetic resonance imaging. Part I--physical principles. West J Med. 1984 Oct;141(4):491-500. PMID: 6506686 PubMed Central

Diabetic myonecrosis

All from SUMSearch:

1. Jelinek JS, Murphey MD, Aboulafia AJ, Dussault RG, Kaplan PA, Snearly WN. Muscle infarction in patients with diabetes mellitus: MR imaging findings. Radiology. 1999 Apr;211(1):241-7. PMID: 10189479 [reference from SUMSearch]

• 21 patients. Unlikely blinded.

2. Kattapuram TM, Suri R, Rosol MS, Rosenberg AE, Kattapuram SV. Idiopathic and diabetic skeletal muscle necrosis: evaluation by magnetic resonance imaging. Skeletal Radiol. 2005 Apr;34(4):203-9. Epub 2005 Feb 8. PMID: 15700181 {see related from Jelinek]

• 14 patients. Unlikely blinded.

3. Ran X, Wang C, Wang H, Zhao T, Tong N, Song B, Bu H, Luo Y, Tian H, Li X. Muscle infarction involving muscles of abdominal and thoracic walls in diabetes. Diabet Med. 2005 Dec;22(12):1757-60. PMID: 16401324 [initially found article on SUMSearch]

• 2 patients

Necrotizing fasciitis

1. Schmid MR, Kossmann T, Duewell S. Differentiation of necrotizing fasciitis and cellulitis using MR imaging. AJR Am J Roentgenol. 1998 Mar;170(3):615-20. PMID: 9490940 (from UpToDate)

2. Parenti GC, Marri C, Calandra G, Morisi C, Zabberoni W. Radiol Med (Torino). 2000 May;99(5):334-9. Review. Italian. PMID: 10938701 (from PIER)

• CT and US (not MRI)
• 32 cases. Unlikely blinded.

From SUMSearch

3. Wong CH, Khin LW, Heng KS, Tan KC, Low CO. The LRINEC (Laboratory Risk Indicator for Necrotizing Fasciitis) score: a tool for distinguishing necrotizing fasciitis from other soft tissue infections. Crit Care Med. 2004 Jul;32(7):1535-41. PMID: 15241098

4. Magnetic resonance imaging differentiates between necrotizing and non-necrotizing fasciitis of the lower extremity. Brothers TE, Tagge DU, Stutley JE, Conway WF, Del Schutte H Jr, Byrne TK. J Am Coll Surg. 1998 Oct;187(4):416-21. PMID: 9783789

5. Differentiation of necrotizing fasciitis and cellulitis using MR imaging. Schmid MR, Kossmann T, Duewell S. AJR Am J Roentgenol. 1998 Mar;170(3):615-20. PMID: 9490940

Pyomyositis

Acute rhabdomyolysis

Clostridial myonecrosis

Per UPToDate: Crepitance is best finding . Reference:

Gozal D, Ziser A, Shupak A, Ariel A, Melamed Y. Necrotizing fasciitis. Arch Surg. 1986 Feb;121(2):233-5. PMID: 3947221