The following conventions are scheduled to start this week in the Washington area.

AMERICAN COLLEGE OF RADIOLOGY

Dates: Through Wednesday

Attendance: 1,000

Headquarters: Hilton Washington and Towers

NATIONAL ROOFING CONTRACTORS ASSOCIATION

Dates: Today through Friday

Attendance: 150

Headquarters: Loews L'Enfant Plaza Hotel

INTERNATIONAL MONETARY FUND

Dates: Tomorrow through Thursday

Attendance: 10,000

Headquarters: Marriott Wardman Park

AMERICAN PYROTECHNICS ASSOCIATION

Dates: Tomorrow through 'Sunday

Attendance: 250

Headquarters: Crystal Gateway Marriott

NORTHEAST SAS USERS GROUP

Dates: Thursday through Oct. 6

Attendance: 1,055

Headquarters: Renaissance Washington, DC Hotel

GEORGE WASHINGTON UNIVERSITY MEDICAL CENTER

Dates: Thursday through Oct. 7

Attendance: 300

Headquarters: Ritz-Carlton, Pentagon City

AMERICAN SOCIETY

OF NUCLEAR CARDIOLOGY

Dates: Thursday through Sunday

Attendance: 700

Headquarters: Marriott Wardman Park

ASSISTED LIVING

FEDERATION

OF AMERICA

Dates: Friday through Oct. 7

Attendance: 1,500

Headquarters: Hyatt Regency Crystal City

ATLANTIC STATES

GAY RODEO ASSOCIATION

Dates: Friday through Oct. 5

Attendance: 500

Headquarters: Hyatt Regency Washington On Capitol Hill

NATIONAL CHRONIC

CARE CONSORTIUM

Dates: Friday through Oct. 5

Attendance: 200

Headquarters: Loews L'Enfant Plaza Hotel

HELMS/BRISCOE

PREFORMANCE GROUP ATLANTA

Dates: Friday through Oct. 6

Attendance: 1,000

Headquarters: Marriott Wardman Park

SOLUTION MINING

RESEARCH INSTITUTE

Dates: Saturday through Oct. 6

Attendance: 200

Headquarters: Sheraton City Centre Hotel

AMERICAN RESORT

DEVELOPMENT ASSOCIATION

Dates: Saturday through Oct. 5

Attendance: 550

Headquarters: Washington Monarch Hotel

Scheduled to start at the Washington Convention Center this week:

EMERGENCY NURSES ASSOCIATION

Dates: Friday through Sunday

Attendance: 3,500

INTERNATIONAL BLACK BUYERS

& MANUFACTURERS EXPO AND CONFERENCE

Dates: Saturday and Sunday

Attendance: 700