Johns Hopkins Prenatal Diagnosis & Treatment Center

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The Department of Gynecology and Obstetrics
Maternal-Fetal Medicine

Prenatal Diagnosis and Treatment Center Our Sonographers: All eight of our sonographers are credentialed by the American Registry of Diagnostic Medical Sonographers (ARDMS) and certified in First Trimester Nuchal Translucency Screening by the Fetal Medicine Foundation (FMF). Christine Bird, BS, RDMS, RVT Chief Obstetrical Sonographer Graduated: The Johns Hopkins School of Diagnostic Medical Sonography, 1992 BS, University of Kentucky, 1970 ARDMS credentialed: 1992 FMF certified: 2001 Cyrethia (CiCi) McShane, BS, RDMS Senior Obstetrical Sonographer GYN/OB Webmaster Graduated: The Johns Hopkins School of Diagnostic Medical Sonography, 1994 BS, Weber State University, 2002 ARDMS credentialed: 1994 FMF certified: 2001 Joanne Cramer, BS, RDMS Staff Obstetrical Sonographer Graduated: The Johns Hopkins School of Diagnostic Medical Sonography, 1993 BS, Frostburg State University, 1971 ARDMS credentialed: 1993 FMF certified: 2002 Jan LaFerriere, AA, RDMS Staff Obstetrical Sonographer Graduated: The Ultrasound Institute of Diagnostic Medical Sonography, 1989 AA, South Central Community College - New Haven, CT, 1976 RDMS credentialed: 1989 FMF certified: 2005 Yolanda Martz, BS, RT, RDMS Senior Obstetrical Sonographer Graduated: Class of 2000 The Johns Hopkins School of Diagnostic Medical Sonography BS, College Misericordia, 1999 ARDMS credentialed: 2000 FMF certified: 2003 Maria Zaharieva, BS, RDMS Staff Obstetrical Sonographer Graduated: Class of 2001 The Johns Hopkins School of Diagnostic Medical Sonography BS, Medical Academy-Sofia Bulgaria, 1989 ARDMS credentialed: 2001 FMF certified: 2004 Shannon Chapline, BS, RDMS Staff Obstetrical Sonographer Graduated: Class of 2002 The Johns Hopkins School of Diagnostic Medical Sonography BS, Towson University, 1984 ARDMS credentialed: 2002 FMF certified: 2004